... curing: 15 minutes skin dry, 4-8 hours full curing. General purpose silicone sealant spray is a single-component, acetoxy sealant ... .FeaturesGood adhesion for most non-porous building materials, Free primer.Excellent weatherproof ability, from -40°C. to 180 °C.Good waterproof ... , interior facility repair, crack grouting,and non-porous building materials. General Purpose silicone sealant spray